diff --git a/python-pexpect.spec b/python-pexpect.spec
index 6b5ac0c..89ee2c6 100644
--- a/python-pexpect.spec
+++ b/python-pexpect.spec
@@ -115,7 +115,7 @@ popd
 %if %{with check}
 %check
 export PYTHONIOENCODING=UTF-8
-export LC_ALL="en_US.UTF-8"
+export LC_ALL=C.utf8
 
 pushd python2
   %{__python2} ./tools/display-sighandlers.py